Greatly prolonged period non-interruptible power supply system

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307 68, 322 4, H02J 906

Patent

active

044069502

ABSTRACT:
This invention relates to a power supply system having the capability of furnishing to a load sensitive to electrical faults and interruptions, electrical power for prolonged periods of time after a utility or other external power supply source thereto is interrupted. The system comprises a main A.C. generator furnishing A.C. potential at a selected frequency and a selected voltage to the sensitive load, an auxiliary A.C. generator connected operatively thereto and a driving means for the generators energized with electricity from the external power supply source which is subject to outages and faults. The auxiliary generator generates A.C. potential at a much higher frequency than from the main A.C. generator and this higher frequency A.C. is supplied to a high speed A.C. induction motor and a flywheel unit in a sealed chamber, which unit can store large amounts of kinetic energy at full speed. Upon interruption of electricity from the utility or other external power source, the high speed A.C. induction motor in the sealed casing will function as a generator and feed back A.C. potential to the auxiliary generator which begins to operate as a motor and drives the main A.C. generator. A relatively small A.C. motor and flywheel unit can store and supply power to keep the main A.C. generator operating for from 1 to 20 minutes so as to ride out practically all reasonably expected power line outages. Particularly good results are obtained if the main A.C. generator is the Roesel generator of U.S. Pat. No. 4,168,459.

REFERENCES:
patent: 2783393 (1957-02-01), Lindahl et al.
patent: 3315148 (1967-04-01), Grillo
patent: 3514625 (1970-05-01), Lane
patent: 3558901 (1971-01-01), Jacobus
patent: 4168459 (1979-09-01), Roesel, Jr.
patent: 4203041 (1980-05-01), Sachs

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